Windows 10: Show Custom Credential Providers V2 in Windows 10 for All users

EhsanRabiee · May 13, 2020

I use sample code of "Credential Providers in Windows 10". I develop my code and change it very good.

But I have some problem with it:

1- It is not enable Show tile for all users in my windows. Show for one user only

2- After restart computer I get this error without any mouse move or press keyboard:

And after press ok on up picture: I get this message and view 3 users???

What is my mistake? And How do I active my Credential Providers for all users?

:)

SaRaVaNaN D · May 13, 2020

Windows terminal server 2012 R2 + Custom credential provider

Hi,

I have a customer credential provider(CP) which is working fine for Windows client(10) and Windows server (2008, 2012 GUI based only). But when I try to use it for Windows terminal server it's not even loading
the Custom CP, no error also. Still, it shows only the default login UI i.e windows default CP. Also I can see my CP is registered in the following HKEY registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\Credential Providers{........}
and DLL file in System32 directory.

There is no info about Windows terminal server with Custom CP in my MS CP page. I have the following questions to move further,

Can we actually implement custom CP for windows terminal servers? is it supported?

If yes, what am I missing? Is there special configuration required to load custom CP in terminal servers?

Thanks in Advance.

Jordan Dom · May 13, 2020

Task scheduler user account list includes user accounts that have already been deleted from the computer.

Thanks for providing the results of the troubleshooting steps we provided. Since the credentials are still showing up in task scheduler, we suggest that you follow the steps below to check the entries in the credential manager and delete the entries manually:

Type the words Credential Manager in Cortana or the search box.

From the list of results select Credential Manager

From this screen, you can manage Web Credentials and
Windows Credentials.

Once you have the screen open verify if any of the credentials you saw in task scheduler is present and manually delete them.

Regards.

Brink · May 13, 2020

Credential Guard lab companion

If you have heard about Credential Guard in Windows Server 2016 (and in Windows 10), but do not have an environment to try it out, here is a lab environment we built for you to play.

Lab access

The link will lead you to a sign up page, after that, you will see the following labs listed for Windows Server 2016:

Windows Server 2016 labs

There are 3 exercises in the “Implementing Breach Resistance Security in Windows Server 2016”:

Credential Guard

Remote Credential Guard

Device Guard

This blogpost will walk you through the Credential Guard lab details.

After click on the link of Breach Resistance lab, you be required to sign in and then you can launch the lab:

Sign-in

Launch page

It takes a few minutes to create the VMs, and once it has done, you will see the following machines prepared:

Initialize

DC: domain controller, which is not used for this exercise.

SRV01 and SRV02: both are Windows Server 2016, and used for the lab exercise.

Lab exercise – Explained

The steps are listed in the Content section:

Content

This lab is structured to cover the following in sequence:

Understand how attackers can use the hash in memory to gain access to domain controllers

Configure Credential Guard

Verify the hash in memory is protected using Credential Guard

You can follow the steps listed under the content section to complete the lab, the intent of the blog, is to break the procedures into groups, to help you understand the exercise better.

Prep the hash

Lsass.exe is the process which handles user logon, it stores the user credential information in its memory. The memory is cleared when the machine starts up. In this lab environment, all the virtual machines start at the time lab launches, when you logon to the machine, you will only have the logon user credential information in memory. In order to demonstrate an attacker gaining user access using other account’s hash, the first part of the lab is to simulate a server which has been running for a while, different users had remotely or locally connected to it, therefore, lsass memory stored many different user credential information.
This is accomplished by step 1-8.

Retrieving credential hash

Mimikatz is a popular tool for retrieving lsass memory information. The tool has been copied to the lab machines, step 9-13 walk you through the process of dumping lsass memory using Mimikatz.

Pass the Hash

Pass the hash is a hacking technique that allows an attacker to authenticate by using the underlying NTLM, instead of specifying the user password. In step 14 to 24, you will extract LabAdmin hash from lsass using Mimikatz, and use the hash to open a PowerShell console, and perform a couple of operations using the LabAdmin privilege:

Add a user to the domain admin group

Open remote PowerShell connection to a domain controller

Both operations could not be performed by the logon user. But using the hash of the LabAdmin, an attacker will be able to do it using the information retrieve from Lsass memory.

Configure and verify Credential Guard

Step 25 to 36 illustrate the steps to configure credential guard, then verify its status using msinfo32.exe and PowerShell.

Step 37 to 43 goes further to use Mimikatz to show the hash in Lsass is now encrypted using Credential Guard.

More info

The exercise illustrated the benefit of Credential Guard in Windows Server 2016 as well as Windows 10. For more information, you can find here.
Click to expand...

Source: Credential Guard lab companion Datacenter and Private Cloud Security Blog

See also:

Enable or Disable Credential Guard in Windows 10 Windows 10 Security System Tutorials

Verify if Credential Guard is Enabled or Disabled in Windows 10 Windows 10 Security System Tutorials

Windows 10: Show Custom Credential Providers V2 in Windows 10 for All users

Show Custom Credential Providers V2 in Windows 10 for All users

Show Custom Credential Providers V2 in Windows 10 for All users

Show Custom Credential Providers V2 in Windows 10 for All users

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